[vdr] Re: FF card AV sync problems, possible fix to VDR (fwd)

Morfsta morfsta at gmail.com
Fri Feb 9 12:41:19 CET 2007


Hi,

I have looked into this further. It appears that I only get the TS
continuity errors when using my budget DVB-T card to view live TV.. They do
not appear when using my FF DVB-S card.

Does this shed any light on things? The DVB-T stream is less robust that
DVB-S, but the picture does not generally break up regularly or appear to
suffer any major problems. Could it be a problem with my Hauppauge budget
DVB-T card?

SWITCH TO SATELLITE CHANNEL: -

Feb  9 10:42:08 morfsta vdr: [25446] switching to channel 166
Feb  9 10:42:08 morfsta vdr: [25446] retuning due to modification of channel
166
Feb  9 10:42:08 morfsta vdr: [25446] switching to channel 166
Feb  9 10:44:47 morfsta vdr: [25446] cleaning up schedules data
Feb  9 10:45:00 morfsta vdr: [25540] EPGSearch: timer conflict check started
Feb  9 10:45:00 morfsta vdr: [25540] EPGSearch: timer conflict check
finished
Feb  9 10:51:01 morfsta vdr: [25536] channel 27 (CBeebies) event Fri
09.02.2007 10:50-11:00 'Boo!' status 4
Feb  9 11:02:12 morfsta vdr: [25536] channel 27 (CBeebies) event Fri
09.02.2007 11:00-11:15 'SMarteenies' status 4
Feb  9 11:09:19 morfsta vdr: [25446] cleaning up id3 cache
Feb  9 11:15:00 morfsta vdr: [25540] EPGSearch: timer conflict check started
Feb  9 11:15:00 morfsta vdr: [25540] EPGSearch: timer conflict check
finished
Feb  9 11:17:32 morfsta vdr: [25536] channel 27 (CBeebies) event Fri
09.02.2007 11:15-11:45 'Teletubbies' status 4

SWITCH TO FREEVIEW DVB-T CHANNEL: -

Feb  9 11:35:55 morfsta vdr: [25446] switching to channel 1
Feb  9 11:35:57 morfsta vdr: [25536] channel 2 (BBC TWO) event Fri
09.02.2007 11:20-11:40 'Schools: Focus' status 4
Feb  9 11:35:57 morfsta vdr: [25536] channel 1 (BBC ONE) event Fri
09.02.2007 11:00-11:45 'To Buy or Not to Buy' status 4
Feb  9 11:38:12 morfsta vdr: [12243] TS continuity error (15)
Feb  9 11:38:12 morfsta vdr: [12243] TS continuity error (1)
Feb  9 11:38:12 morfsta vdr: [12243] TS continuity error (9)

I generally only get sync problems on live DVB-T broadcasts (as well as all
recordings).

Hope this helps,

Regards,

Morfsta


On 2/5/07, Morfsta <morfsta at gmail.com> wrote:
>
> Reinhard,
>
> Thanks for your help and description.
>
> Can anyone help me track down what might be the problem? I built my own
> kernel could a setting there be a problem? What settings are recommended for
> type of IO scheduler, timer frequency, etc? Anyone else have a similar
> problem and can recommend a fix?
>
> Cheers,
>
> Morfsta
>
>
>  On 2/5/07, Reinhard Nissl <rnissl at gmx.de> wrote:
> >
> > Hi,
> >
> > Morfsta wrote:
> >
> > > Lots of TS Continuity Errors in the messages file.
> > >
> > > Feb  5 08:25:00 morfsta vdr: [19772] TS continuity error (11)
> > > Feb  5 08:25:01 morfsta vdr: [19772] cAudioRepacker(0xC0): skipped 588
> > > bytes to sync on next audio frame
> >
> > Sad to say, I'm happy that this is not a bug in cAudioRepacker.
> >
> > So what can you do about this TS continuity errors? First of all, this
> > error means that at least one TS packet got lost, most likely by the
> > fact that the card's hardware buffers where overrun. A overrun can
> > happen when for example the kernel is busy with other things and doesn't
> >
> > react to the cards signalling (e. g. IRQ) in time.
> >
> > Several months ago, I had my PATA harddrive sent in for repair and
> > substituted it by a SATA model. The result was, that I wasn't able to
> > take a single VDR recording on my P4 2.8 GHz without TS continuity
> > errors. When I got the PATA drive back and removed the SATA model, the
> > TS errors were gone.
> >
> > So I'd say this is a hardware/driver/configuration issue -- but not
> > necessarily in the DVB area. I hope, someone else can give you further
> > hints.
> >
> > Bye.
> > --
> > Dipl.-Inform. (FH) Reinhard Nissl
> > mailto:rnissl at gmx.de
> >
> > _______________________________________________
> > vdr mailing list
> > vdr at linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
> >
>
>
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